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  1. CernVM
  2. CVM-1909

Make overlayfs the default union fs

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Medium
    • Resolution: Completed
    • Affects Version/s: None
    • Fix Version/s: CernVM-FS 2.8
    • Component/s: CVMFS
    • Labels:
      None
    • Platforms:
      ANY
    • Development:

      Description

      When both aufs and overlayfs are available (e.g. Ubuntu 20), cvmfs picks aufs as a default. It's time to switch the default to overlayfs.

      The hardlink treatment should be also adjusted in:

      • cvmfs_server_import.sh and cvmfs_server_import.sh: The warning "Warning: CernVM-FS filesystems using overlayfs may not enforce hard link semantics during publishing" is no longer needed for overlayfs.
      • sync_mediator.cc: We do not need to break hardlinks.
      • cvmfs_server_migrate.sh: CVMFS_IGNORE_XDIR_HARDLINKS should be set to true by default.

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            Assignee:
            avalenzu Andrea Valenzuela Ramirez
            Reporter:
            jblomer Jakob Blomer
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              Created:
              Updated:
              Resolved: